Across
1
Three-sided polygon
5
Steepness of a line
6
Round shape with all points equidistant
7
Proven mathematical statement
11
Symbol representing unknown value
Down
2
Lines that never intersect
3
Middle value in an ordered dataset
4
System of ordered marks for measuring
8
Power to which a number is raised
9
Comparison of two quantities
10
Rectangular array of numbers